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path: root/Alc

Mode	Name	Size
-rw-r--r--	ALc.c	136933	logstatsplain
-rw-r--r--	ALu.c	70734	logstatsplain
-rw-r--r--	alcConfig.c	17932	logstatsplain
-rw-r--r--	alcRing.c	9760	logstatsplain
-rw-r--r--	alstring.h	1702	logstatsplain
-rw-r--r--	ambdec.c	16571	logstatsplain
-rw-r--r--	ambdec.h	1057	logstatsplain
d---------	backends	643	logstatsplain
-rw-r--r--	bformatdec.c	20590	logstatsplain
-rw-r--r--	bformatdec.h	3057	logstatsplain
-rw-r--r--	bs2b.c	5721	logstatsplain
-rw-r--r--	bsinc.c	717972	logstatsplain
-rw-r--r--	compat.h	1091	logstatsplain
-rw-r--r--	converter.c	16341	logstatsplain
-rw-r--r--	converter.h	1563	logstatsplain
d---------	effects	374	logstatsplain
-rw-r--r--	helpers.c	32289	logstatsplain
-rw-r--r--	hrtf.c	41564	logstatsplain
-rw-r--r--	hrtf.h	1396	logstatsplain
-rw-r--r--	mastering.c	7375	logstatsplain
-rw-r--r--	mixer.c	25047	logstatsplain
-rw-r--r--	mixer_c.c	7366	logstatsplain
-rw-r--r--	mixer_defs.h	7400	logstatsplain
-rw-r--r--	mixer_inc.c	4253	logstatsplain
-rw-r--r--	mixer_neon.c	11625	logstatsplain
-rw-r--r--	mixer_sse.c	7780	logstatsplain
-rw-r--r--	mixer_sse2.c	2926	logstatsplain
-rw-r--r--	mixer_sse3.c	3326	logstatsplain
-rw-r--r--	mixer_sse41.c	5398	logstatsplain
-rw-r--r--	nfcfilter.c	11200	logstatsplain
-rw-r--r--	nfcfilter.h	1547	logstatsplain
-rw-r--r--	panning.c	52992	logstatsplain
-rw-r--r--	uhjfilter.c	5168	logstatsplain
-rw-r--r--	uhjfilter.h	1771	logstatsplain
-rw-r--r--	vector.h	5065	logstatsplain

generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 23:31:52 +0000

/**
 * OpenAL cross platform audio library
 * Copyright (C) 1999-2007 by authors.
 * This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 *  License along with this library; if not, write to the
 *  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 *  Boston, MA  02111-1307, USA.
 * Or go to http://www.gnu.org/copyleft/lgpl.html
 */

#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <memory.h>
#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#endif
#include "alMain.h"
#include "AL/al.h"
#include "AL/alc.h"

#include <alsa/asoundlib.h>


typedef struct {
    snd_pcm_t *pcmHandle;
    snd_pcm_format_t format;

    ALvoid *buffer;
    ALsizei size;

    RingBuffer *ring;
    int doCapture;

    volatile int killNow;
    ALvoid *thread;
} alsa_data;

typedef struct {
    ALCchar *name;
    int card, dev;
} DevMap;

static void *alsa_handle;
#define MAKE_FUNC(f) static typeof(f) * p##f
MAKE_FUNC(snd_strerror);
MAKE_FUNC(snd_pcm_open);
MAKE_FUNC(snd_pcm_close);
MAKE_FUNC(snd_pcm_nonblock);
MAKE_FUNC(snd_pcm_frames_to_bytes);
MAKE_FUNC(snd_pcm_hw_params_malloc);
MAKE_FUNC(snd_pcm_hw_params_free);
MAKE_FUNC(snd_pcm_hw_params_any);
MAKE_FUNC(snd_pcm_hw_params_set_access);
MAKE_FUNC(snd_pcm_hw_params_set_format);
MAKE_FUNC(snd_pcm_hw_params_set_channels);
MAKE_FUNC(snd_pcm_hw_params_set_periods_near);
MAKE_FUNC(snd_pcm_hw_params_set_rate_near);
MAKE_FUNC(snd_pcm_hw_params_set_rate);
MAKE_FUNC(snd_pcm_hw_params_set_buffer_size_near);
MAKE_FUNC(snd_pcm_hw_params_set_buffer_size_min);
MAKE_FUNC(snd_pcm_hw_params_get_buffer_size);
MAKE_FUNC(snd_pcm_hw_params_get_period_size);
MAKE_FUNC(snd_pcm_hw_params_get_access);
MAKE_FUNC(snd_pcm_hw_params);
MAKE_FUNC(snd_pcm_sw_params_malloc);
MAKE_FUNC(snd_pcm_sw_params_current);
MAKE_FUNC(snd_pcm_sw_params_set_avail_min);
MAKE_FUNC(snd_pcm_sw_params);
MAKE_FUNC(snd_pcm_sw_params_free);
MAKE_FUNC(snd_pcm_prepare);
MAKE_FUNC(snd_pcm_start);
MAKE_FUNC(snd_pcm_resume);
MAKE_FUNC(snd_pcm_wait);
MAKE_FUNC(snd_pcm_state);
MAKE_FUNC(snd_pcm_avail_update);
MAKE_FUNC(snd_pcm_areas_silence);
MAKE_FUNC(snd_pcm_mmap_begin);
MAKE_FUNC(snd_pcm_mmap_commit);
MAKE_FUNC(snd_pcm_readi);
MAKE_FUNC(snd_pcm_writei);
MAKE_FUNC(snd_pcm_drain);
MAKE_FUNC(snd_pcm_info_malloc);
MAKE_FUNC(snd_pcm_info_free);
MAKE_FUNC(snd_pcm_info_set_device);
MAKE_FUNC(snd_pcm_info_set_subdevice);
MAKE_FUNC(snd_pcm_info_set_stream);
MAKE_FUNC(snd_pcm_info_get_name);
MAKE_FUNC(snd_ctl_pcm_next_device);
MAKE_FUNC(snd_ctl_pcm_info);
MAKE_FUNC(snd_ctl_open);
MAKE_FUNC(snd_ctl_close);
MAKE_FUNC(snd_ctl_card_info_malloc);
MAKE_FUNC(snd_ctl_card_info_free);
MAKE_FUNC(snd_ctl_card_info);
MAKE_FUNC(snd_ctl_card_info_get_name);
MAKE_FUNC(snd_card_next);
#undef MAKE_FUNC


static const ALCchar alsaDevice[] = "ALSA Software";
static DevMap *allDevNameMap;
static ALuint numDevNames;
static DevMap *allCaptureDevNameMap;
static ALuint numCaptureDevNames;


static int xrun_recovery(snd_pcm_t *handle, int err)
{
    if (err == -EPIPE)
    {    /* under-run */
        err = psnd_pcm_prepare(handle);
        if (err < 0)
            AL_PRINT("prepare failed: %s\n", psnd_strerror(err));
    }
    else if (err == -ESTRPIPE)
    {
        while ((err = psnd_pcm_resume(handle)) == -EAGAIN)
            Sleep(1);       /* wait until the suspend flag is released */
        if (err < 0)
        {
            err = psnd_pcm_prepare(handle);
            if (err < 0)
                AL_PRINT("prepare failed: %s\n", psnd_strerror(err));
        }
    }
    return err;
}

static int verify_state(snd_pcm_t *handle)
{
    snd_pcm_state_t state = psnd_pcm_state(handle);
    if(state == SND_PCM_STATE_DISCONNECTED)
        return -ENODEV;
    if(state == SND_PCM_STATE_XRUN)
    {
        int err = xrun_recovery(handle, -EPIPE);
        if(err < 0) return err;
    }
    else if (state == SND_PCM_STATE_SUSPENDED)
    {
        int err = xrun_recovery(handle, -ESTRPIPE);
        if(err < 0) return err;
    }

    return state;
}


static ALuint ALSAProc(ALvoid *ptr)
{
    ALCdevice *pDevice = (ALCdevice*)ptr;
    alsa_data *data = (alsa_data*)pDevice->ExtraData;
    const snd_pcm_channel_area_t *areas = NULL;
    snd_pcm_sframes_t avail, commitres;
    snd_pcm_uframes_t offset, frames;
    char *WritePtr;
    int WriteCnt;
    int err;

    while(!data->killNow)
    {
        int state = verify_state(data->pcmHandle);
        if(state < 0)
        {
            AL_PRINT("Invalid state detected: %s\n", psnd_strerror(state));
            aluHandleDisconnect(pDevice);
            break;
        }

        avail = psnd_pcm_avail_update(data->pcmHandle);
        if(avail < 0)
        {
            err = xrun_recovery(data->pcmHandle, avail);
            if (err < 0)
            {
                AL_PRINT("available update failed: %s\n", psnd_strerror(err));
                aluHandleDisconnect(pDevice);
                break;
            }
            continue;
        }

        // make sure there's frames to process
        if(avail >= 0 && avail < (snd_pcm_sframes_t)pDevice->UpdateSize)
        {
            if(state != SND_PCM_STATE_RUNNING)
            {
                err = psnd_pcm_start(data->pcmHandle);
                if(err < 0)
                    err = xrun_recovery(data->pcmHandle, err);
                if(err < 0)
                {
                    AL_PRINT("start failed: %s\n", psnd_strerror(err));
                    aluHandleDisconnect(pDevice);
                    break;
                }
            }
            else if(psnd_pcm_wait(data->pcmHandle, 1000) == 0)
                AL_PRINT("Wait timeout... buffer size too low?\n");
            continue;
        }
        avail = pDevice->UpdateSize;

        // it is possible that contiguous areas are smaller, thus we use a loop
        while (avail > 0)
        {
            frames = avail;

            SuspendContext(NULL);
            err = psnd_pcm_mmap_begin(data->pcmHandle, &areas, &offset, &frames);
            if (err < 0)
            {
                err = xrun_recovery(data->pcmHandle, err);
                if (err < 0)
                    AL_PRINT("mmap begin error: %s\n", psnd_strerror(err));
                ProcessContext(NULL);
                break;
            }

            WritePtr = (char*)areas->addr + (offset * areas->step / 8);
            WriteCnt = psnd_pcm_frames_to_bytes(data->pcmHandle, frames);
            aluMixData(pDevice->Context, WritePtr, WriteCnt, pDevice->Format);

            commitres = psnd_pcm_mmap_commit(data->pcmHandle, offset, frames);
            if (commitres < 0 || (commitres-frames) != 0)
            {
                AL_PRINT("mmap commit error: %s\n",
                         psnd_strerror(commitres >= 0 ? -EPIPE : commitres));
                ProcessContext(NULL);
                break;
            }
            ProcessContext(NULL);

            avail -= frames;
        }
    }

    return 0;
}

static ALuint ALSANoMMapProc(ALvoid *ptr)
{
    ALCdevice *pDevice = (ALCdevice*)ptr;
    alsa_data *data = (alsa_data*)pDevice->ExtraData;
    snd_pcm_sframes_t avail;
    char *WritePtr;

    while(!data->killNow)
    {
        int state = verify_state(data->pcmHandle);
        if(state < 0)
        {
            AL_PRINT("Invalid state detected: %s\n", psnd_strerror(state));
            aluHandleDisconnect(pDevice);
            break;
        }

        SuspendContext(NULL);
        aluMixData(pDevice->Context, data->buffer, data->size, pDevice->Format);
        ProcessContext(NULL);

        WritePtr = data->buffer;
        avail = (snd_pcm_uframes_t)data->size / psnd_pcm_frames_to_bytes(data->pcmHandle, 1);
        while(avail > 0)
        {
            int ret = psnd_pcm_writei(data->pcmHandle, WritePtr, avail);
            switch (ret)
            {
            case -EAGAIN:
                continue;
            case -ESTRPIPE:
                while((ret=psnd_pcm_resume(data->pcmHandle)) == -EAGAIN)
                    Sleep(1);
                break;
            case -EPIPE:
                break;
            default:
                if (ret >= 0)
                {
                    WritePtr += psnd_pcm_frames_to_bytes(data->pcmHandle, ret);
                    avail -= ret;
                }
                break;
            }
            if (ret < 0)
            {
                ret = psnd_pcm_prepare(data->pcmHandle);
                if(ret < 0)
                    break;
            }
        }
    }

    return 0;
}

static ALuint ALSANoMMapCaptureProc(ALvoid *ptr)
{
    ALCdevice *pDevice = (ALCdevice*)ptr;
    alsa_data *data = (alsa_data*)pDevice->ExtraData;
    snd_pcm_sframes_t avail;

    while(!data->killNow)
    {
        int state = verify_state(data->pcmHandle);
        if(state < 0)
        {
            AL_PRINT("Invalid state detected: %s\n", psnd_strerror(state));
            aluHandleDisconnect(pDevice);
            break;
        }

        avail = (snd_pcm_uframes_t)data->size / psnd_pcm_frames_to_bytes(data->pcmHandle, 1);
        avail = psnd_pcm_readi(data->pcmHandle, data->buffer, avail);
        switch(avail)
        {
            case -EAGAIN:
                continue;
            case -ESTRPIPE:
                while((avail=psnd_pcm_resume(data->pcmHandle)) == -EAGAIN)
                    Sleep(1);
                break;
            case -EPIPE:
                break;
            default:
                if (avail >= 0 && data->doCapture)
                    WriteRingBuffer(data->ring, data->buffer, avail);
                break;
        }
        if(avail < 0)
        {
            avail = psnd_pcm_prepare(data->pcmHandle);
            if(avail < 0)
                AL_PRINT("prepare error: %s\n", psnd_strerror(avail));
        }
    }

    return 0;
}

static ALCboolean alsa_open_playback(ALCdevice *device, const ALCchar *deviceName)
{
    const char *devName = alsaDevice;
    alsa_data *data;
    char driver[64];
    int i;

    if(!alsa_handle)
        return ALC_FALSE;

    strncpy(driver, GetConfigValue("alsa", "device", "default"), sizeof(driver)-1);
    driver[sizeof(driver)-1] = 0;
    if(deviceName)
    {
        size_t idx;

        for(idx = 0;idx < numDevNames;idx++)
        {
            if(allDevNameMap[idx].name &&
               strcmp(deviceName, allDevNameMap[idx].name) == 0)
            {
                devName = allDevNameMap[idx].name;
                if(idx > 0)
                    sprintf(driver, "hw:%d,%d", allDevNameMap[idx].card, allDevNameMap[idx].dev);
                goto open_alsa;
            }
        }
        if(strcmp(deviceName, alsaDevice) == 0)
            goto open_alsa;
        return ALC_FALSE;
    }

open_alsa:
    data = (alsa_data*)calloc(1, sizeof(alsa_data));

    i = psnd_pcm_open(&data->pcmHandle, driver, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
    if(i < 0)
    {
        Sleep(200);
        i = psnd_pcm_open(&data->pcmHandle, driver, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
    }
    if(i >= 0)
    {
        i = psnd_pcm_nonblock(data->pcmHandle, 0);
        if(i < 0)
            psnd_pcm_close(data->pcmHandle);
    }
    if(i < 0)
    {
        free(data);
        AL_PRINT("Could not open playback device '%s': %s\n", driver, psnd_strerror(i));
        return ALC_FALSE;
    }

    device->szDeviceName = strdup(devName);
    device->ExtraData = data;
    return ALC_TRUE;
}

static void alsa_close_playback(ALCdevice *device)
{
    alsa_data *data = (alsa_data*)device->ExtraData;

    psnd_pcm_close(data->pcmHandle);
    free(data);
    device->ExtraData = NULL;
}

static ALCboolean alsa_start_context(ALCdevice *device, ALCcontext *context)
{
    alsa_data *data = (alsa_data*)device->ExtraData;
    snd_pcm_uframes_t bufferSizeInFrames;
    snd_pcm_sw_params_t *sp = NULL;
    snd_pcm_hw_params_t *p = NULL;
    snd_pcm_access_t access;
    unsigned int periods;
    unsigned int rate;
    const char *str;
    int allowmmap;
    char *err;
    int i;
    (void)context;


    switch(aluBytesFromFormat(device->Format))
    {
        case 1:
            data->format = SND_PCM_FORMAT_U8;
            break;
        case 2:
            data->format = SND_PCM_FORMAT_S16;
            break;
        case 4:
            data->format = SND_PCM_FORMAT_FLOAT;
            break;
        default:
            data->format = SND_PCM_FORMAT_UNKNOWN;
            AL_PRINT("Unknown format?! %x\n", device->Format);
    }

    periods = GetConfigValueInt("alsa", "periods", 0);
    bufferSizeInFrames = device->BufferSize;
    rate = device->Frequency;

    str = GetConfigValue("alsa", "mmap", "true");
    allowmmap = (strcasecmp(str, "true") == 0 ||
                 strcasecmp(str, "yes") == 0 ||
                 strcasecmp(str, "on") == 0 ||
                 atoi(str) != 0);

    err = NULL;
    psnd_pcm_hw_params_malloc(&p);

    if((i=psnd_pcm_hw_params_any(data->pcmHandle, p)) < 0)
        err = "any";
    /* set interleaved access */
    if(err == NULL && (!allowmmap || (i=psnd_pcm_hw_params_set_access(data->pcmHandle, p, SND_PCM_ACCESS_MMAP_INTERLEAVED)) < 0))
    {
        if((i=psnd_pcm_hw_params_set_access(data->pcmHandle, p, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0)
            err = "set access";
    }
    /* set format (implicitly sets sample bits) */
    if(err == NULL && (i=psnd_pcm_hw_params_set_format(data->pcmHandle, p, data->format)) < 0)
        err = "set format";
    /* set channels (implicitly sets frame bits) */
    if(err == NULL && (i=psnd_pcm_hw_params_set_channels(data->pcmHandle, p, aluChannelsFromFormat(device->Format))) < 0)
        err = "set channels";
    /* set periods (implicitly constrains period/buffer parameters) */
    if(err == NULL && periods && (i=psnd_pcm_hw_params_set_periods_near(data->pcmHandle, p, &periods, NULL)) < 0)
        err = "set periods near";
    /* set rate (implicitly constrains period/buffer parameters) */
    if(err == NULL && (i=psnd_pcm_hw_params_set_rate_near(data->pcmHandle, p, &rate, NULL)) < 0)
        err = "set rate near";
    /* set buffer size in frame units (implicitly sets period size/bytes/time and buffer time/bytes) */
    if(err == NULL && (i=psnd_pcm_hw_params_set_buffer_size_near(data->pcmHandle, p, &bufferSizeInFrames)) < 0)
        err = "set buffer size near";
    /* install and prepare hardware configuration */
    if(err == NULL && (i=psnd_pcm_hw_params(data->pcmHandle, p)) < 0)
        err = "set params";
    if(err == NULL && (i=psnd_pcm_hw_params_get_access(p, &access)) < 0)
        err = "get access";
    if(err == NULL && (i=psnd_pcm_hw_params_get_period_size(p, &bufferSizeInFrames, NULL)) < 0)
        err = "get period size";
    if(err != NULL)
    {
        AL_PRINT("%s failed: %s\n", err, psnd_strerror(i));
        psnd_pcm_hw_params_free(p);
        return ALC_FALSE;
    }

    psnd_pcm_hw_params_free(p);

    err = NULL;
    psnd_pcm_sw_params_malloc(&sp);

    if((i=psnd_pcm_sw_params_current(data->pcmHandle, sp)) != 0)
        err = "sw current";
    if(err == NULL && (i=psnd_pcm_sw_params_set_avail_min(data->pcmHandle, sp, bufferSizeInFrames)) != 0)
        err = "sw set avail min";
    if(err == NULL && (i=psnd_pcm_sw_params(data->pcmHandle, sp)) != 0)
        err = "sw set params";
    if(err != NULL)
    {
        AL_PRINT("%s failed: %s\n", err, psnd_strerror(i));
        psnd_pcm_sw_params_free(sp);
        return ALC_FALSE;
    }

    psnd_pcm_sw_params_free(sp);

    data->size = psnd_pcm_frames_to_bytes(data->pcmHandle, bufferSizeInFrames);
    if(access == SND_PCM_ACCESS_RW_INTERLEAVED)
    {
        data->buffer = malloc(data->size);
        if(!data->buffer)
        {
            AL_PRINT("buffer malloc failed\n");
            return ALC_FALSE;
        }
    }
    else
    {
        i = psnd_pcm_prepare(data->pcmHandle);
        if(i < 0)
        {
            AL_PRINT("prepare error: %s\n", psnd_strerror(i));
            free(data->buffer);
            data->buffer = NULL;
            return ALC_FALSE;
        }
    }

    if(access == SND_PCM_ACCESS_RW_INTERLEAVED)
        data->thread = StartThread(ALSANoMMapProc, device);
    else
        data->thread = StartThread(ALSAProc, device);
    if(data->thread == NULL)
    {
        AL_PRINT("Could not create playback thread\n");
        free(data->buffer);
        data->buffer = NULL;
        return ALC_FALSE;
    }

    device->UpdateSize = bufferSizeInFrames;
    device->Frequency = rate;

    return ALC_TRUE;
}

static void alsa_stop_context(ALCdevice *device, ALCcontext *context)
{
    alsa_data *data = (alsa_data*)device->ExtraData;
    (void)context;

    if(!data->thread)
        return;

    data->killNow = 1;
    StopThread(data->thread);